When there are a lot of lines on a plot, it can be difficult to use a legend to distinguish individual lines. How can I label individual lines on a plot in MATLAB?When there are a lot of lines on a plot, it can be difficult to use a legend to distinguish individual lines. How can I label individual lines on a plot in MATLAB? When there are a lot of lines on a plot, it can be difficult to use a legend to distinguish individual lines. How can I label individual lines on a plot in MATLAB? legend, line, label, text, annotation MATLAB Answers — New Questions

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Hello
Using sprintf it is possible to create multiline labels in a legend. However, as shown in the example below, it would be better if the legend symbol (the colored line) would always be aligned with the first line of the multiline label, so aligned on top instead of being centered. The current output looks a bit confusing. Is it possible to control the position of the legend symbol w.r.t. the label?
Thanks in advance.
x=1:5;
y1=x;
y2=x.^2;
y3=x.^3;
plot(x,y1)
hold on
plot(x,y2)
plot(x,y3)
legend({‘first graph $y=x$’, sprintf(‘%sn%s’, ‘second graph’, ‘$y=x^2$’), sprintf(‘%sn%s’, ‘third graph’, ‘$y=x^3$’)}, ‘Interpreter’, ‘latex’)Hello
Using sprintf it is possible to create multiline labels in a legend. However, as shown in the example below, it would be better if the legend symbol (the colored line) would always be aligned with the first line of the multiline label, so aligned on top instead of being centered. The current output looks a bit confusing. Is it possible to control the position of the legend symbol w.r.t. the label?
Thanks in advance.
x=1:5;
y1=x;
y2=x.^2;
y3=x.^3;
plot(x,y1)
hold on
plot(x,y2)
plot(x,y3)
legend({‘first graph $y=x$’, sprintf(‘%sn%s’, ‘second graph’, ‘$y=x^2$’), sprintf(‘%sn%s’, ‘third graph’, ‘$y=x^3$’)}, ‘Interpreter’, ‘latex’) Hello
Using sprintf it is possible to create multiline labels in a legend. However, as shown in the example below, it would be better if the legend symbol (the colored line) would always be aligned with the first line of the multiline label, so aligned on top instead of being centered. The current output looks a bit confusing. Is it possible to control the position of the legend symbol w.r.t. the label?
Thanks in advance.
x=1:5;
y1=x;
y2=x.^2;
y3=x.^3;
plot(x,y1)
hold on
plot(x,y2)
plot(x,y3)
legend({‘first graph $y=x$’, sprintf(‘%sn%s’, ‘second graph’, ‘$y=x^2$’), sprintf(‘%sn%s’, ‘third graph’, ‘$y=x^3$’)}, ‘Interpreter’, ‘latex’) legend, multiline, align MATLAB Answers — New Questions

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I’m trying to run the following code, byt I have the error "Error in untitled (line 9) [t,x]=ode45(‘prob’,tspan,x0);" .
Why is that happening? Can anyone help me, please? Thank you!

%Numerical Solutions
%Problem #57
clc
clear
close all
%Numerical Solution
x0=[0;0];
tspan=[0 15];
[t,x]=ode45(‘prob’,tspan,x0);
figure(1)
plot(t,x(:,1));
title(‘Problem #57’);
xlabel(‘Time, sec.’);
ylabel(‘Displacement, m’);
hold on
%Analytical Solution
m=100;
c=20;
k=1000;
F=30;
w=sqrt(k/m);
d=c/(2*w*m);
wd=w*sqrt(1-d^2);
to=1;
phi=atan(d/sqrt(1-d^2));
%for t<to
t=linspace(0,1,3);
x=0.*t;
plot(t,x,’*’);
%for t>=to
t=linspace(1,15);
x=F/k-F/(k*sqrt(1-d^2)).*exp(-d.*w.*(t-to)).*cos(wd.*(t-to)-phi);
plot(t,x,’*’);
legend(‘Numerical’, ‘Analytical’)
%M-file for Prob #50
function dx=prob(t,x)
[rows, cols]=size(x);dx=zeros(rows, cols);
m=100;
c=20;
k=1000;
F=30;
if t<1
dx=0;
else
dx(1)=x(2);
dx(2)=-c/m*x(2) – k/m*x(1) + F/m;
end
endI’m trying to run the following code, byt I have the error "Error in untitled (line 9) [t,x]=ode45(‘prob’,tspan,x0);" .
Why is that happening? Can anyone help me, please? Thank you!

%Numerical Solutions
%Problem #57
clc
clear
close all
%Numerical Solution
x0=[0;0];
tspan=[0 15];
[t,x]=ode45(‘prob’,tspan,x0);
figure(1)
plot(t,x(:,1));
title(‘Problem #57’);
xlabel(‘Time, sec.’);
ylabel(‘Displacement, m’);
hold on
%Analytical Solution
m=100;
c=20;
k=1000;
F=30;
w=sqrt(k/m);
d=c/(2*w*m);
wd=w*sqrt(1-d^2);
to=1;
phi=atan(d/sqrt(1-d^2));
%for t<to
t=linspace(0,1,3);
x=0.*t;
plot(t,x,’*’);
%for t>=to
t=linspace(1,15);
x=F/k-F/(k*sqrt(1-d^2)).*exp(-d.*w.*(t-to)).*cos(wd.*(t-to)-phi);
plot(t,x,’*’);
legend(‘Numerical’, ‘Analytical’)
%M-file for Prob #50
function dx=prob(t,x)
[rows, cols]=size(x);dx=zeros(rows, cols);
m=100;
c=20;
k=1000;
F=30;
if t<1
dx=0;
else
dx(1)=x(2);
dx(2)=-c/m*x(2) – k/m*x(1) + F/m;
end
end I’m trying to run the following code, byt I have the error "Error in untitled (line 9) [t,x]=ode45(‘prob’,tspan,x0);" .
Why is that happening? Can anyone help me, please? Thank you!

%Numerical Solutions
%Problem #57
clc
clear
close all
%Numerical Solution
x0=[0;0];
tspan=[0 15];
[t,x]=ode45(‘prob’,tspan,x0);
figure(1)
plot(t,x(:,1));
title(‘Problem #57’);
xlabel(‘Time, sec.’);
ylabel(‘Displacement, m’);
hold on
%Analytical Solution
m=100;
c=20;
k=1000;
F=30;
w=sqrt(k/m);
d=c/(2*w*m);
wd=w*sqrt(1-d^2);
to=1;
phi=atan(d/sqrt(1-d^2));
%for t<to
t=linspace(0,1,3);
x=0.*t;
plot(t,x,’*’);
%for t>=to
t=linspace(1,15);
x=F/k-F/(k*sqrt(1-d^2)).*exp(-d.*w.*(t-to)).*cos(wd.*(t-to)-phi);
plot(t,x,’*’);
legend(‘Numerical’, ‘Analytical’)
%M-file for Prob #50
function dx=prob(t,x)
[rows, cols]=size(x);dx=zeros(rows, cols);
m=100;
c=20;
k=1000;
F=30;
if t<1
dx=0;
else
dx(1)=x(2);
dx(2)=-c/m*x(2) – k/m*x(1) + F/m;
end
end error untitled MATLAB Answers — New Questions

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Hello,
I need your help.
In the image bellow (hopefully it did work this time) there is a three-dimensional tooth on the left (with its three-dimensional coordinates, of course) and on the left the same tooth but in a two-dimensional parameterised disc. The order of the points on the 2D and 3D vectors are the same, that is, the points are corresponding.
I woud like to select a point on the 3D tooth and get the same point marked on the right 2D tooth. I can do this the other way around, that is, selecting a point on the disc and then getting the correspondent on the 3D figure.
My method for doing this on the 2D was with the function getpts, which gives me the coordinates of the mouse where I click. I then take the nearest neighbour of that point (or points) and plot the corresponding points on the 3D figure with its correct indexes.
So my question is, is there a similar function to getpts() for a 3D figure?
Thank you :)Hello,
I need your help.
In the image bellow (hopefully it did work this time) there is a three-dimensional tooth on the left (with its three-dimensional coordinates, of course) and on the left the same tooth but in a two-dimensional parameterised disc. The order of the points on the 2D and 3D vectors are the same, that is, the points are corresponding.
I woud like to select a point on the 3D tooth and get the same point marked on the right 2D tooth. I can do this the other way around, that is, selecting a point on the disc and then getting the correspondent on the 3D figure.
My method for doing this on the 2D was with the function getpts, which gives me the coordinates of the mouse where I click. I then take the nearest neighbour of that point (or points) and plot the corresponding points on the 3D figure with its correct indexes.
So my question is, is there a similar function to getpts() for a 3D figure?
Thank you 🙂 Hello,
I need your help.
In the image bellow (hopefully it did work this time) there is a three-dimensional tooth on the left (with its three-dimensional coordinates, of course) and on the left the same tooth but in a two-dimensional parameterised disc. The order of the points on the 2D and 3D vectors are the same, that is, the points are corresponding.
I woud like to select a point on the 3D tooth and get the same point marked on the right 2D tooth. I can do this the other way around, that is, selecting a point on the disc and then getting the correspondent on the 3D figure.
My method for doing this on the 2D was with the function getpts, which gives me the coordinates of the mouse where I click. I then take the nearest neighbour of that point (or points) and plot the corresponding points on the 3D figure with its correct indexes.
So my question is, is there a similar function to getpts() for a 3D figure?
Thank you 🙂 3d getpts MATLAB Answers — New Questions

​

My dataset consists of two parameters: time (in micro second) and amplitude (Attached):
I am particularly interested in analyzing the fluctuation of the dominant frequency across the entire dataset. Additionally, I want to examine how the frequency content changes as a function of time. For instance, in time intervals such as 0–200 ms, 100–300 ms, 300–500 ms, and so on.

I attempted multiple approaches, but the results are not very consistent. I would be interested in getting a second opinion.

Thanks in Advance!My dataset consists of two parameters: time (in micro second) and amplitude (Attached):
I am particularly interested in analyzing the fluctuation of the dominant frequency across the entire dataset. Additionally, I want to examine how the frequency content changes as a function of time. For instance, in time intervals such as 0–200 ms, 100–300 ms, 300–500 ms, and so on.

I attempted multiple approaches, but the results are not very consistent. I would be interested in getting a second opinion.

Thanks in Advance! My dataset consists of two parameters: time (in micro second) and amplitude (Attached):
I am particularly interested in analyzing the fluctuation of the dominant frequency across the entire dataset. Additionally, I want to examine how the frequency content changes as a function of time. For instance, in time intervals such as 0–200 ms, 100–300 ms, 300–500 ms, and so on.

I attempted multiple approaches, but the results are not very consistent. I would be interested in getting a second opinion.

Thanks in Advance! time series, fft MATLAB Answers — New Questions

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If I have two arrays A and B as displayed below, how can I rearrange B such that a new boolean array Ba which corresponds to the values of array B can be resorted according to the values of array A instead?
For example, if I have:
A =
1 5 3 2 4 4 2 2 3 5
2 1 1 2 0 1 1 1 0 0
30 22 23 25 -1 30 18 25 -1 -1
B =
1 2 2 2 3 3 4 4 5 5
2 1 1 2 0 1 0 1 0 1
30 18 25 25 -1 23 -1 30 -1 22
Ba =
0 0 1 0 1 0 0 0 0 0
Note that array B is simply the sorted version of array A according to the first row in an ascended order. It is resorted twice according to the second row in an ascended order for the values in row 1 that equal one another (e.g., if there are multiples elements equal to 3 in row 1, then the array will sort by the second row instead, so if the second row has values 3 3 3 3 3; 2 6 3 9 1, it will then be sorted to 3 3 3 3 3; 1 2 3 6 9)
I only mentioned this in case reverse sorting might work easier than entirely rearranging the position of the array.
I want to rearrange array B and Ba such that it corresponds to the positioning of array A.
So the new arrays would look like this:
A =
1 5 3 2 4 4 2 2 3 5
2 1 1 2 0 1 1 1 0 0
30 22 23 25 -1 30 18 25 -1 -1
Aa =
0 0 0 0 0 0 0 1 1 0
The new array would essentially match A, and the array Aa is the same array Ba but now rearranged so that it follows the arrangement of A rather than B.
I am not entirely sure how to write the MATLAB code to accomplish this. All help is appreciated!If I have two arrays A and B as displayed below, how can I rearrange B such that a new boolean array Ba which corresponds to the values of array B can be resorted according to the values of array A instead?
For example, if I have:
A =
1 5 3 2 4 4 2 2 3 5
2 1 1 2 0 1 1 1 0 0
30 22 23 25 -1 30 18 25 -1 -1
B =
1 2 2 2 3 3 4 4 5 5
2 1 1 2 0 1 0 1 0 1
30 18 25 25 -1 23 -1 30 -1 22
Ba =
0 0 1 0 1 0 0 0 0 0
Note that array B is simply the sorted version of array A according to the first row in an ascended order. It is resorted twice according to the second row in an ascended order for the values in row 1 that equal one another (e.g., if there are multiples elements equal to 3 in row 1, then the array will sort by the second row instead, so if the second row has values 3 3 3 3 3; 2 6 3 9 1, it will then be sorted to 3 3 3 3 3; 1 2 3 6 9)
I only mentioned this in case reverse sorting might work easier than entirely rearranging the position of the array.
I want to rearrange array B and Ba such that it corresponds to the positioning of array A.
So the new arrays would look like this:
A =
1 5 3 2 4 4 2 2 3 5
2 1 1 2 0 1 1 1 0 0
30 22 23 25 -1 30 18 25 -1 -1
Aa =
0 0 0 0 0 0 0 1 1 0
The new array would essentially match A, and the array Aa is the same array Ba but now rearranged so that it follows the arrangement of A rather than B.
I am not entirely sure how to write the MATLAB code to accomplish this. All help is appreciated! If I have two arrays A and B as displayed below, how can I rearrange B such that a new boolean array Ba which corresponds to the values of array B can be resorted according to the values of array A instead?
For example, if I have:
A =
1 5 3 2 4 4 2 2 3 5
2 1 1 2 0 1 1 1 0 0
30 22 23 25 -1 30 18 25 -1 -1
B =
1 2 2 2 3 3 4 4 5 5
2 1 1 2 0 1 0 1 0 1
30 18 25 25 -1 23 -1 30 -1 22
Ba =
0 0 1 0 1 0 0 0 0 0
Note that array B is simply the sorted version of array A according to the first row in an ascended order. It is resorted twice according to the second row in an ascended order for the values in row 1 that equal one another (e.g., if there are multiples elements equal to 3 in row 1, then the array will sort by the second row instead, so if the second row has values 3 3 3 3 3; 2 6 3 9 1, it will then be sorted to 3 3 3 3 3; 1 2 3 6 9)
I only mentioned this in case reverse sorting might work easier than entirely rearranging the position of the array.
I want to rearrange array B and Ba such that it corresponds to the positioning of array A.
So the new arrays would look like this:
A =
1 5 3 2 4 4 2 2 3 5
2 1 1 2 0 1 1 1 0 0
30 22 23 25 -1 30 18 25 -1 -1
Aa =
0 0 0 0 0 0 0 1 1 0
The new array would essentially match A, and the array Aa is the same array Ba but now rearranged so that it follows the arrangement of A rather than B.
I am not entirely sure how to write the MATLAB code to accomplish this. All help is appreciated! array, sort MATLAB Answers — New Questions

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Hi,
I have a series of subplots (5×4). Every subplot has the same x axis and the same limits. At the moment, I have the values of x axis visible in every subplot. I would like to have the values only visible at the bottom subplots, so that the figure would be simpler. I already edited the code so that the x label is only visible at the bottom subplots. But how do I do the same to the x axis values?
I tried turning of the ‘XTick’
set(gca,’XTick’,[]);
This worked, however, now the grid also turned off. How can I get the values to be only at the bottom subplots, and the grid on?
The same goes for y axis. I only want the values of the y axis to be visible at the left subplots.
Thank you in advance for any answers!Hi,
I have a series of subplots (5×4). Every subplot has the same x axis and the same limits. At the moment, I have the values of x axis visible in every subplot. I would like to have the values only visible at the bottom subplots, so that the figure would be simpler. I already edited the code so that the x label is only visible at the bottom subplots. But how do I do the same to the x axis values?
I tried turning of the ‘XTick’
set(gca,’XTick’,[]);
This worked, however, now the grid also turned off. How can I get the values to be only at the bottom subplots, and the grid on?
The same goes for y axis. I only want the values of the y axis to be visible at the left subplots.
Thank you in advance for any answers! Hi,
I have a series of subplots (5×4). Every subplot has the same x axis and the same limits. At the moment, I have the values of x axis visible in every subplot. I would like to have the values only visible at the bottom subplots, so that the figure would be simpler. I already edited the code so that the x label is only visible at the bottom subplots. But how do I do the same to the x axis values?
I tried turning of the ‘XTick’
set(gca,’XTick’,[]);
This worked, however, now the grid also turned off. How can I get the values to be only at the bottom subplots, and the grid on?
The same goes for y axis. I only want the values of the y axis to be visible at the left subplots.
Thank you in advance for any answers! subplot, axes, xlabel, xvalue MATLAB Answers — New Questions

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Does anyone know how to insert a table from MATLAB to a powerpoint slide?

For example:
header = cell{1,3};
header = {‘Header1’ ‘Header2’ ‘Header 3’};

data= [1, 2, 3;
1, 4, 9;];

How would one output this to powerpoint? I’ve seen the Matlab figures to powerpoint copying and pasting, but not sure how to insert a table.

Thanks for your help!Does anyone know how to insert a table from MATLAB to a powerpoint slide?

For example:
header = cell{1,3};
header = {‘Header1’ ‘Header2’ ‘Header 3’};

data= [1, 2, 3;
1, 4, 9;];

How would one output this to powerpoint? I’ve seen the Matlab figures to powerpoint copying and pasting, but not sure how to insert a table.

Thanks for your help! Does anyone know how to insert a table from MATLAB to a powerpoint slide?

For example:
header = cell{1,3};
header = {‘Header1’ ‘Header2’ ‘Header 3’};

data= [1, 2, 3;
1, 4, 9;];

How would one output this to powerpoint? I’ve seen the Matlab figures to powerpoint copying and pasting, but not sure how to insert a table.

Thanks for your help! powerpoint, table, inserting MATLAB Answers — New Questions

​

I’m doing coordinate system transformation using the ecef2enu function. But for some reason, all three E, N, and U values are the same. I wonder why. How can I modify it to get the exact value?
Isn’t it normal for the 1, 2, 3 matrices to have different values? Is there something wrong with my code?

currTime = gnss.SensorModel.InitialTime;
setup(scene)
wgs84 = wgs84Ellipsoid(‘meter’);
while scene.IsRunning

[~,~,p,satPos,status] = gnss.read ();
allSatPos = gnssconstellation(currTime); % ecef
currTime = currTime + seconds(1/scene.UpdateRate);

[~,trueRecPos] = plat.read; % lla
trueRecPos_ecef = lla2ecef(trueRecPos); % uav ecef
[az,el] = lookangles(trueRecPos,satPos,gnss.SensorModel.MaskAngle);
nsat = length(satPos(:,1));
enu_sat = zeros(nsat,3);
for k = 1:1:nsat
enu_sat(k,:) = ecef2enu(satPos(k,1),satPos(k,2),satPos(k,3),trueRecPos(1),trueRecPos(2),trueRecPos(3),wgs84);
end
temp=1;
unit_sat = normalize(enu_sat,’norm’,1);
target_z = 500;
scale_factors = target_z ./ unit_sat(:,3);
unit_sat_scaled = unit_sat .* scale_factors;
endI’m doing coordinate system transformation using the ecef2enu function. But for some reason, all three E, N, and U values are the same. I wonder why. How can I modify it to get the exact value?
Isn’t it normal for the 1, 2, 3 matrices to have different values? Is there something wrong with my code?

currTime = gnss.SensorModel.InitialTime;
setup(scene)
wgs84 = wgs84Ellipsoid(‘meter’);
while scene.IsRunning

[~,~,p,satPos,status] = gnss.read ();
allSatPos = gnssconstellation(currTime); % ecef
currTime = currTime + seconds(1/scene.UpdateRate);

[~,trueRecPos] = plat.read; % lla
trueRecPos_ecef = lla2ecef(trueRecPos); % uav ecef
[az,el] = lookangles(trueRecPos,satPos,gnss.SensorModel.MaskAngle);
nsat = length(satPos(:,1));
enu_sat = zeros(nsat,3);
for k = 1:1:nsat
enu_sat(k,:) = ecef2enu(satPos(k,1),satPos(k,2),satPos(k,3),trueRecPos(1),trueRecPos(2),trueRecPos(3),wgs84);
end
temp=1;
unit_sat = normalize(enu_sat,’norm’,1);
target_z = 500;
scale_factors = target_z ./ unit_sat(:,3);
unit_sat_scaled = unit_sat .* scale_factors;
end I’m doing coordinate system transformation using the ecef2enu function. But for some reason, all three E, N, and U values are the same. I wonder why. How can I modify it to get the exact value?
Isn’t it normal for the 1, 2, 3 matrices to have different values? Is there something wrong with my code?

currTime = gnss.SensorModel.InitialTime;
setup(scene)
wgs84 = wgs84Ellipsoid(‘meter’);
while scene.IsRunning

[~,~,p,satPos,status] = gnss.read ();
allSatPos = gnssconstellation(currTime); % ecef
currTime = currTime + seconds(1/scene.UpdateRate);

[~,trueRecPos] = plat.read; % lla
trueRecPos_ecef = lla2ecef(trueRecPos); % uav ecef
[az,el] = lookangles(trueRecPos,satPos,gnss.SensorModel.MaskAngle);
nsat = length(satPos(:,1));
enu_sat = zeros(nsat,3);
for k = 1:1:nsat
enu_sat(k,:) = ecef2enu(satPos(k,1),satPos(k,2),satPos(k,3),trueRecPos(1),trueRecPos(2),trueRecPos(3),wgs84);
end
temp=1;
unit_sat = normalize(enu_sat,’norm’,1);
target_z = 500;
scale_factors = target_z ./ unit_sat(:,3);
unit_sat_scaled = unit_sat .* scale_factors;
end optimization, gnss, ecef2enu, enu, ecef MATLAB Answers — New Questions

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